>>13475730Charizards confirmed and I would say it's safe to believe Snorlax is a BIG possibility. My best bet is Red putting a snorlax on his team for certain.
His other 4, though, I honestly couldn't possibly fathom a guess. Maybe a Butterfree? That would be pretty cool, honestly. Butterfree is one of my favorite gen 1 pokemon.
I would hazard a guess and say his water type will probably be Lapras. That's all I really got.
So in short:
Charizard
Butterfree
Snorlax
Lapras
He might use whatever pokemon was exclusive to pokemon Red, Electabuzz, right?